Camping/Backpacking in OH/MI/PA/NY?

My husband and I live near Cleveland and want to backpack through a national or state park for 4-5 days this summer. We don’t want to drive more than ~6 hours from our home. Where should we go for the best hiking and camping?

Promised Lands State Park, Pocono Mountains PA. I am there almost every weekend. Great for camping/fishing/and hiking. Very good trails. see website. Have Fun!